/**
 * 版权所有(C)，上海海鼎信息工程股份有限公司，2008，所有权利保留。
 * 
 * 项目名： rumba
 * 文件名： ChineseCalendarGB.java
 * 模块说明：    
 * 修改历史：
 * Mar 21, 2008 - linhui - 创建。
 */
package com.hd123.rumba.gwt.welcome.client;

import java.util.HashMap;

/**
 * 中国农历算法 | 实用于公历 1901 年至 2100 年之间的 200 年
 */
public class ChineseCalendarGB {
  private int gregorianYear;
  private int gregorianMonth;
  private int gregorianDate;
  private boolean isGregorianLeap;
  private int dayOfYear;
  private int dayOfWeek; // 周日一星期的第一天
  private int chineseYear;
  private int chineseMonth; // 负数表示闰月
  private int chineseDate;
  private int sectionalTerm;
  private int principleTerm;
  private static char[] daysInGregorianMonth = {
      31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };

  // private static String[] stemNames =
  // {"甲","乙","丙","丁","戊","己","庚","辛","壬","癸"};
  // private static String[] branchNames =
  // {"子","丑","寅","卯","辰","巳","午","未","申","酉","戌","亥"};
  // private static String[] animalNames =
  // {"鼠","牛","虎","兔","龙","蛇","马","羊","猴","鸡","狗","猪"};

  public ChineseCalendarGB() {
    setGregorian(1901, 1, 1);
  }

  /**
   * 设置年月日
   * 
   * @param y
   *          年
   * @param m
   *          月
   * @param d
   *          日
   */
  public void setGregorian(int y, int m, int d) {
    gregorianYear = y;
    gregorianMonth = m;
    gregorianDate = d;
    isGregorianLeap = isGregorianLeapYear(y);
    dayOfYear = dayOfYear(y, m, d);
    dayOfWeek = dayOfWeek(y, m, d);
    chineseYear = 0;
    chineseMonth = 0;
    chineseDate = 0;
    sectionalTerm = 0;
    principleTerm = 0;
  }

  /**
   * 是否为闰年
   * 
   * @param year
   *          当前年
   * @return true表示为闰年 false表示不是闰年
   */
  public static boolean isGregorianLeapYear(int year) {
    boolean isLeap = false;
    if (year % 4 == 0)
      isLeap = true;
    if (year % 100 == 0)
      isLeap = false;
    if (year % 400 == 0)
      isLeap = true;
    return isLeap;
  }

  /**
   * 所在月的天数
   * @param y 年
   * @param m 月
   * @return 当月的天数
   */
  public static int daysInGregorianMonth(int y, int m) {
    int d = daysInGregorianMonth[m - 1];
    if (m == 2 && isGregorianLeapYear(y))
      d++; // 公历闰年二月多一天
    return d;
  }

  /**
   * 所在年中，1年的天数
   * 
   * @param y
   *          年
   * @param m
   *          月
   * @param d
   *          日
   * @return 当年的天数
   */
  public static int dayOfYear(int y, int m, int d) {
    int c = 0;
    for (int i = 1; i < m; i++) {
      c = c + daysInGregorianMonth(y, i);
    }
    c = c + d;
    return c;
  }

  /**
   * 获得设定日期对应为星期几，星期日为1，星期一至星期六对应2-7
   * 
   * @param y
   *          年
   * @param m
   *          月
   * @param d
   *          日
   * @return 当前日期对应的星期值
   */
  public static int dayOfWeek(int y, int m, int d) {
    int w = 1; // 公历一年一月一日是星期一，所以起始值为星期日
    y = (y - 1) % 400 + 1; // 公历星期值分部 400 年循环一次
    int ly = (y - 1) / 4; // 闰年次数
    ly = ly - (y - 1) / 100;
    ly = ly + (y - 1) / 400;
    int ry = y - 1 - ly; // 常年次数
    w = w + ry; // 常年星期值增一
    w = w + 2 * ly; // 闰年星期值增二
    w = w + dayOfYear(y, m, d);
    w = (w - 1) % 7 + 1;
    return w;
  }

  private static char[] chineseMonths = {
      // 农历月份大小压缩表，两个字节表示一年。两个字节共十六个二进制位数，
      // 前四个位数表示闰月月份，后十二个位数表示十二个农历月份的大小。
      0x00, 0x04, 0xad, 0x08, 0x5a, 0x01, 0xd5, 0x54, 0xb4, 0x09, 0x64, 0x05, 0x59, 0x45, 0x95,
      0x0a, 0xa6, 0x04, 0x55, 0x24, 0xad, 0x08, 0x5a, 0x62, 0xda, 0x04, 0xb4, 0x05, 0xb4, 0x55,
      0x52, 0x0d, 0x94, 0x0a, 0x4a, 0x2a, 0x56, 0x02, 0x6d, 0x71, 0x6d, 0x01, 0xda, 0x02, 0xd2,
      0x52, 0xa9, 0x05, 0x49, 0x0d, 0x2a, 0x45, 0x2b, 0x09, 0x56, 0x01, 0xb5, 0x20, 0x6d, 0x01,
      0x59, 0x69, 0xd4, 0x0a, 0xa8, 0x05, 0xa9, 0x56, 0xa5, 0x04, 0x2b, 0x09, 0x9e, 0x38, 0xb6,
      0x08, 0xec, 0x74, 0x6c, 0x05, 0xd4, 0x0a, 0xe4, 0x6a, 0x52, 0x05, 0x95, 0x0a, 0x5a, 0x42,
      0x5b, 0x04, 0xb6, 0x04, 0xb4, 0x22, 0x6a, 0x05, 0x52, 0x75, 0xc9, 0x0a, 0x52, 0x05, 0x35,
      0x55, 0x4d, 0x0a, 0x5a, 0x02, 0x5d, 0x31, 0xb5, 0x02, 0x6a, 0x8a, 0x68, 0x05, 0xa9, 0x0a,
      0x8a, 0x6a, 0x2a, 0x05, 0x2d, 0x09, 0xaa, 0x48, 0x5a, 0x01, 0xb5, 0x09, 0xb0, 0x39, 0x64,
      0x05, 0x25, 0x75, 0x95, 0x0a, 0x96, 0x04, 0x4d, 0x54, 0xad, 0x04, 0xda, 0x04, 0xd4, 0x44,
      0xb4, 0x05, 0x54, 0x85, 0x52, 0x0d, 0x92, 0x0a, 0x56, 0x6a, 0x56, 0x02, 0x6d, 0x02, 0x6a,
      0x41, 0xda, 0x02, 0xb2, 0xa1, 0xa9, 0x05, 0x49, 0x0d, 0x0a, 0x6d, 0x2a, 0x09, 0x56, 0x01,
      0xad, 0x50, 0x6d, 0x01, 0xd9, 0x02, 0xd1, 0x3a, 0xa8, 0x05, 0x29, 0x85, 0xa5, 0x0c, 0x2a,
      0x09, 0x96, 0x54, 0xb6, 0x08, 0x6c, 0x09, 0x64, 0x45, 0xd4, 0x0a, 0xa4, 0x05, 0x51, 0x25,
      0x95, 0x0a, 0x2a, 0x72, 0x5b, 0x04, 0xb6, 0x04, 0xac, 0x52, 0x6a, 0x05, 0xd2, 0x0a, 0xa2,
      0x4a, 0x4a, 0x05, 0x55, 0x94, 0x2d, 0x0a, 0x5a, 0x02, 0x75, 0x61, 0xb5, 0x02, 0x6a, 0x03,
      0x61, 0x45, 0xa9, 0x0a, 0x4a, 0x05, 0x25, 0x25, 0x2d, 0x09, 0x9a, 0x68, 0xda, 0x08, 0xb4,
      0x09, 0xa8, 0x59, 0x54, 0x03, 0xa5, 0x0a, 0x91, 0x3a, 0x96, 0x04, 0xad, 0xb0, 0xad, 0x04,
      0xda, 0x04, 0xf4, 0x62, 0xb4, 0x05, 0x54, 0x0b, 0x44, 0x5d, 0x52, 0x0a, 0x95, 0x04, 0x55,
      0x22, 0x6d, 0x02, 0x5a, 0x71, 0xda, 0x02, 0xaa, 0x05, 0xb2, 0x55, 0x49, 0x0b, 0x4a, 0x0a,
      0x2d, 0x39, 0x36, 0x01, 0x6d, 0x80, 0x6d, 0x01, 0xd9, 0x02, 0xe9, 0x6a, 0xa8, 0x05, 0x29,
      0x0b, 0x9a, 0x4c, 0xaa, 0x08, 0xb6, 0x08, 0xb4, 0x38, 0x6c, 0x09, 0x54, 0x75, 0xd4, 0x0a,
      0xa4, 0x05, 0x45, 0x55, 0x95, 0x0a, 0x9a, 0x04, 0x55, 0x44, 0xb5, 0x04, 0x6a, 0x82, 0x6a,
      0x05, 0xd2, 0x0a, 0x92, 0x6a, 0x4a, 0x05, 0x55, 0x0a, 0x2a, 0x4a, 0x5a, 0x02, 0xb5, 0x02,
      0xb2, 0x31, 0x69, 0x03, 0x31, 0x73, 0xa9, 0x0a, 0x4a, 0x05, 0x2d, 0x55, 0x2d, 0x09, 0x5a,
      0x01, 0xd5, 0x48, 0xb4, 0x09, 0x68, 0x89, 0x54, 0x0b, 0xa4, 0x0a, 0xa5, 0x6a, 0x95, 0x04,
      0xad, 0x08, 0x6a, 0x44, 0xda, 0x04, 0x74, 0x05, 0xb0, 0x25, 0x54, 0x03 };
  // 初始日，公历农历对应日期：
  // 公历 1901 年 1 月 1 日，对应农历 4598 年 11 月 11 日
  private static int baseYear = 1901;
  private static int baseMonth = 1;
  private static int baseDate = 1;
  private static int baseIndex = 0;
  private static int baseChineseYear = 4598 - 1;
  private static int baseChineseMonth = 11;
  private static int baseChineseDate = 11;

  /**
   * 计算出农历对应各字段的值
   * 
   * @return 1表示超出技术范围，0表示计算成功
   */
  public int computeChineseFields() {
    if (gregorianYear < 1901 || gregorianYear > 2100)
      return 1;
    int startYear = baseYear;
    int startMonth = baseMonth;
    int startDate = baseDate;
    chineseYear = baseChineseYear;
    chineseMonth = baseChineseMonth;
    chineseDate = baseChineseDate;
    // 第二个对应日，用以提高计算效率
    // 公历 2000 年 1 月 1 日，对应农历 4697 年 11 月 25 日
    if (gregorianYear >= 2000) {
      startYear = baseYear + 99;
      startMonth = 1;
      startDate = 1;
      chineseYear = baseChineseYear + 99;
      chineseMonth = 11;
      chineseDate = 25;
    }
    int daysDiff = 0;
    for (int i = startYear; i < gregorianYear; i++) {
      daysDiff += 365;
      if (isGregorianLeapYear(i))
        daysDiff += 1; // leap year
    }
    for (int i = startMonth; i < gregorianMonth; i++) {
      daysDiff += daysInGregorianMonth(gregorianYear, i);
    }
    daysDiff += gregorianDate - startDate;

    chineseDate += daysDiff;
    int lastDate = daysInChineseMonth(chineseYear, chineseMonth);
    int nextMonth = nextChineseMonth(chineseYear, chineseMonth);
    while (chineseDate > lastDate) {
      if (Math.abs(nextMonth) < Math.abs(chineseMonth))
        chineseYear++;
      chineseMonth = nextMonth;
      chineseDate -= lastDate;
      lastDate = daysInChineseMonth(chineseYear, chineseMonth);
      nextMonth = nextChineseMonth(chineseYear, chineseMonth);
    }
    return 0;
  }

  private static int[] bigLeapMonthYears = {
      // 大闰月的闰年年份
      6, 14, 19, 25, 33, 36, 38, 41, 44, 52, 55, 79, 117, 136, 147, 150, 155, 158, 185, 193 };

  public static int daysInChineseMonth(int y, int m) {
    // 注意：闰月 m < 0
    int index = y - baseChineseYear + baseIndex;
    int v = 0;
    int l = 0;
    int d = 30;
    if (1 <= m && m <= 8) {
      v = chineseMonths[2 * index];
      l = m - 1;
      if (((v >> l) & 0x01) == 1)
        d = 29;
    } else if (9 <= m && m <= 12) {
      v = chineseMonths[2 * index + 1];
      l = m - 9;
      if (((v >> l) & 0x01) == 1)
        d = 29;
    } else {
      v = chineseMonths[2 * index + 1];
      v = (v >> 4) & 0x0F;
      if (v != Math.abs(m)) {
        d = 0;
      } else {
        d = 29;
        for (int i = 0; i < bigLeapMonthYears.length; i++) {
          if (bigLeapMonthYears[i] == index) {
            d = 30;
            break;
          }
        }
      }
    }
    return d;
  }

  public static int nextChineseMonth(int y, int m) {
    int n = Math.abs(m) + 1;
    if (m > 0) {
      int index = y - baseChineseYear + baseIndex;
      int v = chineseMonths[2 * index + 1];
      v = (v >> 4) & 0x0F;
      if (v == m)
        n = -m;
    }
    if (n == 13)
      n = 1;
    return n;
  }

  private static char[][] sectionalTermMap = {
      {
          7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 6, 6, 6, 5, 5, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 5, 5 },
      {
          5, 4, 5, 5, 5, 4, 4, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 4, 4, 4, 3, 3, 4, 4, 3, 3, 3 },
      {
          6, 6, 6, 7, 6, 6, 6, 6, 5, 6, 6, 6, 5, 5, 6, 6, 5, 5, 5, 6, 5, 5, 5, 5, 4, 5, 5, 5, 5 },
      {
          5, 5, 6, 6, 5, 5, 5, 6, 5, 5, 5, 5, 4, 5, 5, 5, 4, 4, 5, 5, 4, 4, 4, 5, 4, 4, 4, 4, 5 },
      {
          6, 6, 6, 7, 6, 6, 6, 6, 5, 6, 6, 6, 5, 5, 6, 6, 5, 5, 5, 6, 5, 5, 5, 5, 4, 5, 5, 5, 5 },
      {
          6, 6, 7, 7, 6, 6, 6, 7, 6, 6, 6, 6, 5, 6, 6, 6, 5, 5, 6, 6, 5, 5, 5, 6, 5, 5, 5, 5, 4, 5,
          5, 5, 5 },
      {
          7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7, 6, 7, 7, 7, 6, 6, 7, 7, 6, 6, 6, 7, 7 },
      {
          8, 8, 8, 9, 8, 8, 8, 8, 7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7, 6, 7, 7, 7, 6, 6,
          7, 7, 7 }, {
          8, 8, 8, 9, 8, 8, 8, 8, 7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7, 6, 7, 7, 7, 7 },
      {
          9, 9, 9, 9, 8, 9, 9, 9, 8, 8, 9, 9, 8, 8, 8, 9, 8, 8, 8, 8, 7, 8, 8, 8, 7, 7, 8, 8, 8 },
      {
          8, 8, 8, 8, 7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7, 6, 7, 7, 7, 6, 6, 7, 7, 7 },
      {
          7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7, 6, 7, 7, 7, 6, 6, 7, 7, 6, 6, 6, 7, 7 } };
  private static char[][] sectionalTermYear = {
      {
          13, 49, 85, 117, 149, 185, 201, 250, 250 }, {
          13, 45, 81, 117, 149, 185, 201, 250, 250 }, {
          13, 48, 84, 112, 148, 184, 200, 201, 250 }, {
          13, 45, 76, 108, 140, 172, 200, 201, 250 }, {
          13, 44, 72, 104, 132, 168, 200, 201, 250 }, {
          5, 33, 68, 96, 124, 152, 188, 200, 201 }, {
          29, 57, 85, 120, 148, 176, 200, 201, 250 }, {
          13, 48, 76, 104, 132, 168, 196, 200, 201 }, {
          25, 60, 88, 120, 148, 184, 200, 201, 250 }, {
          16, 44, 76, 108, 144, 172, 200, 201, 250 }, {
          28, 60, 92, 124, 160, 192, 200, 201, 250 }, {
          17, 53, 85, 124, 156, 188, 200, 201, 250 } };
  private static char[][] principleTermMap = {
      {
          21, 21, 21, 21, 21, 20, 21, 21, 21, 20, 20, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 19,
          20, 20, 20, 19, 19, 20 },
      {
          20, 19, 19, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 18, 19, 19, 19, 18, 18, 19, 19, 18,
          18, 18, 18, 18, 18, 18 },
      {
          21, 21, 21, 22, 21, 21, 21, 21, 20, 21, 21, 21, 20, 20, 21, 21, 20, 20, 20, 21, 20, 20,
          20, 20, 19, 20, 20, 20, 20 },
      {
          20, 21, 21, 21, 20, 20, 21, 21, 20, 20, 20, 21, 20, 20, 20, 20, 19, 20, 20, 20, 19, 19,
          20, 20, 19, 19, 19, 20, 20 },
      {
          21, 22, 22, 22, 21, 21, 22, 22, 21, 21, 21, 22, 21, 21, 21, 21, 20, 21, 21, 21, 20, 20,
          21, 21, 20, 20, 20, 21, 21 },
      {
          22, 22, 22, 22, 21, 22, 22, 22, 21, 21, 22, 22, 21, 21, 21, 22, 21, 21, 21, 21, 20, 21,
          21, 21, 20, 20, 21, 21, 21 },
      {
          23, 23, 24, 24, 23, 23, 23, 24, 23, 23, 23, 23, 22, 23, 23, 23, 22, 22, 23, 23, 22, 22,
          22, 23, 22, 22, 22, 22, 23 },
      {
          23, 24, 24, 24, 23, 23, 24, 24, 23, 23, 23, 24, 23, 23, 23, 23, 22, 23, 23, 23, 22, 22,
          23, 23, 22, 22, 22, 23, 23 },
      {
          23, 24, 24, 24, 23, 23, 24, 24, 23, 23, 23, 24, 23, 23, 23, 23, 22, 23, 23, 23, 22, 22,
          23, 23, 22, 22, 22, 23, 23 },
      {
          24, 24, 24, 24, 23, 24, 24, 24, 23, 23, 24, 24, 23, 23, 23, 24, 23, 23, 23, 23, 22, 23,
          23, 23, 22, 22, 23, 23, 23 },
      {
          23, 23, 23, 23, 22, 23, 23, 23, 22, 22, 23, 23, 22, 22, 22, 23, 22, 22, 22, 22, 21, 22,
          22, 22, 21, 21, 22, 22, 22 },
      {
          22, 22, 23, 23, 22, 22, 22, 23, 22, 22, 22, 22, 21, 22, 22, 22, 21, 21, 22, 22, 21, 21,
          21, 22, 21, 21, 21, 21, 22 } };
  private static char[][] principleTermYear = {
      {
          13, 45, 81, 113, 149, 185, 201 }, {
          21, 57, 93, 125, 161, 193, 201 }, {
          21, 56, 88, 120, 152, 188, 200, 201 }, {
          21, 49, 81, 116, 144, 176, 200, 201 }, {
          17, 49, 77, 112, 140, 168, 200, 201 }, {
          28, 60, 88, 116, 148, 180, 200, 201 }, {
          25, 53, 84, 112, 144, 172, 200, 201 }, {
          29, 57, 89, 120, 148, 180, 200, 201 }, {
          17, 45, 73, 108, 140, 168, 200, 201 }, {
          28, 60, 92, 124, 160, 192, 200, 201 }, {
          16, 44, 80, 112, 148, 180, 200, 201 }, {
          17, 53, 88, 120, 156, 188, 200, 201 } };

  /**
   * 计算出当前节气信息
   * 
   * @return 1表示超出技术范围，0表示计算成功
   */
  public int computeSolarTerms() {
    if (gregorianYear < 1901 || gregorianYear > 2100)
      return 1;
    sectionalTerm = sectionalTerm(gregorianYear, gregorianMonth);
    principleTerm = principleTerm(gregorianYear, gregorianMonth);
    return 0;
  }

  public static int sectionalTerm(int y, int m) {
    if (y < 1901 || y > 2100)
      return 0;
    int index = 0;
    int ry = y - baseYear + 1;
    while (ry >= sectionalTermYear[m - 1][index])
      index++;
    int term = sectionalTermMap[m - 1][4 * index + ry % 4];
    if ((ry == 121) && (m == 4))
      term = 5;
    if ((ry == 132) && (m == 4))
      term = 5;
    if ((ry == 194) && (m == 6))
      term = 6;
    return term;
  }

  public static int principleTerm(int y, int m) {
    if (y < 1901 || y > 2100)
      return 0;
    int index = 0;
    int ry = y - baseYear + 1;
    while (ry >= principleTermYear[m - 1][index])
      index++;
    int term = principleTermMap[m - 1][4 * index + ry % 4];
    if ((ry == 171) && (m == 3))
      term = 21;
    if ((ry == 181) && (m == 5))
      term = 21;
    return term;
  }

  public String toString() {
    StringBuffer buf = new StringBuffer();
    buf.append("Gregorian Year: " + gregorianYear + "\n");
    buf.append("Gregorian Month: " + gregorianMonth + "\n");
    buf.append("Gregorian Date: " + gregorianDate + "\n");
    buf.append("Is Leap Year: " + isGregorianLeap + "\n");
    buf.append("Day of Year: " + dayOfYear + "\n");
    buf.append("Day of Week: " + dayOfWeek + "\n");
    buf.append("Chinese Year: " + chineseYear + "\n");
    buf.append("Heavenly Stem: " + ((chineseYear - 1) % 10) + "\n");
    buf.append("Earthly Branch: " + ((chineseYear - 1) % 12) + "\n");
    buf.append("Chinese Month: " + chineseMonth + "\n");
    buf.append("Chinese Date: " + chineseDate + "\n");
    buf.append("Sectional Term: " + sectionalTerm + "\n");
    buf.append("Principle Term: " + principleTerm + "\n");
    return buf.toString();
  }

  private static String[] principleTermNames = {
      "大寒", "雨水", "春分", "谷雨", "夏满", "夏至", "大暑", "处暑", "秋分", "霜降", "小雪", "冬至" };
  private static String[] sectionalTermNames = {
      "小寒", "立春", "惊蛰", "清明", "立夏", "芒种", "小暑", "立秋", "白露", "寒露", "立冬", "大雪" };

  private static HashMap lunarFestival = new HashMap() {
    {
      put("0101", "春节");
      put("0115", "元宵节");
      put("0505", "端午节");
      put("0707", "七夕情人节");
      put("0715", "中元节");
      put("0815", "中秋节");
      put("0909", "重阳节");
      put("1208", "腊八节");
      put("1224", "小年");
    }
  };

  private static HashMap festival = new HashMap() {
    {
      put("0101", "元旦");
      put("0214", "情人节");
      put("0308", "妇女节");
      put("0312", "植树节");
      put("0315", "消费者权益日");
      put("0401", "愚人节");
      put("0504", "青年节");
      put("0801", "建军节");
      put("0808", "父亲节");
      put("0910", "教师节");
      put("1001", "国庆节");
      put("1224", "平安夜");
      put("1225", "圣诞节");
    }
  };

  /**
   * 获得当天的农历日期
   * 
   * @return 当天的农历日期
   */
  public String getLunarDay() {
    if (chineseMonth < 0)
      return "农历闰 " + Math.abs(chineseMonth) + " 月 " + chineseDate + " 日";
    else
      return "农历 " + chineseMonth + " 月 " + chineseDate + " 日";
  }

  /**
   * 获得当前日期的节日信息
   * 
   * @return 当天的节日
   */
  public String getFestivalToday() {
    String ftv = "";
    if (gregorianDate == sectionalTerm)
      ftv = ftv + " " + sectionalTermNames[gregorianMonth - 1];
    else if (gregorianDate == principleTerm)
      ftv = ftv + " " + principleTermNames[gregorianMonth - 1];

    String gm = String.valueOf(gregorianMonth);
    if (gm.length() == 1)
      gm = '0' + gm;
    String cm = String.valueOf(Math.abs(chineseMonth));
    if (cm.length() == 1)
      cm = '0' + cm;
    String gd = String.valueOf(gregorianDate);
    if (gd.length() == 1)
      gd = '0' + gd;
    String cd = String.valueOf(chineseDate);
    if (cd.length() == 1)
      cd = '0' + cd;
    if (festival.containsKey(gm + gd))
      ftv = ftv + " " + festival.get(gm + gd).toString();
    if (lunarFestival.containsKey(cm + cd))
      ftv = ftv + " " + lunarFestival.get(cm + cd).toString();

    if (Math.abs(chineseMonth) == 12
        && chineseDate == daysInChineseMonth(chineseYear, chineseMonth))
      ftv = ftv + " " + "除夕";

    return ftv.trim();
  }

  /**
   * 增加1天，计算出下一天的公历、农历数据
   */
  public void rollUpOneDay() {
    dayOfWeek = dayOfWeek % 7 + 1;
    dayOfYear++;
    gregorianDate++;
    int days = daysInGregorianMonth(gregorianYear, gregorianMonth);
    if (gregorianDate > days) {
      gregorianDate = 1;
      gregorianMonth++;
      if (gregorianMonth > 12) {
        gregorianMonth = 1;
        gregorianYear++;
        dayOfYear = 1;
        isGregorianLeap = isGregorianLeapYear(gregorianYear);
      }
      sectionalTerm = sectionalTerm(gregorianYear, gregorianMonth);
      principleTerm = principleTerm(gregorianYear, gregorianMonth);
    }
    chineseDate++;
    days = daysInChineseMonth(chineseYear, chineseMonth);
    if (chineseDate > days) {
      chineseDate = 1;
      chineseMonth = nextChineseMonth(chineseYear, chineseMonth);
      if (chineseMonth == 1)
        chineseYear++;
    }
  }
}
